Traction-machine.



H. W. ADAMS. TRACTION MACHINE. APPLICATION FILED APR.26. m5.

Patented Apr. 8,1919.

c tgm HARRY w. ADAMfs, on nrnivni roms ivrrnnnsom.

TRACTION-MACHINE. j-

To all whom it may concern I I Be it known that I HARRY NV. AoaMs,

citizen of the United States, resident of Minneapolis, county of IIennepinfState of Minnesota, have invented certain new and useful Improvements in Traction-Machines, of which the following is a specification.

The primary Object of my invention is to provide a traction machine having steering wheel to run in the furrow and equipped with means to prevent the edge' of the wheel rim from digging into the wall of the furrow and climbing out of the furrow.

A further object is to provide improved means for raising and lowering the furrow wheel to compensate for thedifierence in length of the wheel that is running in the furrow and the one that is traveling on the land. I

Other objects of the invention will appear from the following detailed description.

The invention consists generally in vari ous constructions and combinations all as hereinafter descrlbed and partlcularly pointed out in the claims.

In the accompanying drawings formingpart of this specification,

Figure 1 is a side elevation of a traction machine embodying my invention,

Fig. 2 is a detail view, showing the raising and lowering device in section and also illustrating the means mounted inthe wheel rim to bear on the wall of the furrow.

Figs. 3 and 4 are detail Views of the raising and lowering mechanism,

Fig. 5 is a detail sectional view, showing the preferred manner of mounting the fun row wall plate in the wheel rim.

In the drawing, 2 represents a traction machine having a truss frame 3 at the forward end in which is mounted and upright sleeve 4: on a vertical pivot bolt 5. This sleeve is rocked back and forth in its bearing by means of the arm 6 that is connected with the steering post. Mounted on the sleeve 4 is an upright bracket v7 having guides 8 therein for a vertically movable slide 9 on the lower end of which a wheel spindle 10 is mounted. This slide has a longitudinal slot 11 therein to receive a bolt 12 which passes through said slot and into the bracket 7 Vertical movement of the sleeve is obtained by meansof a thread ed rod 13 having an end 14: to receive an specification of Letters Patent operating tool engaging a threaded revolved," the slidewill be moved vertically in the bracket to raise or lower the wheel spindle, 17 wheel, mounted on the spindle '10 and having anannular rib is thereon to dig into the bottom of the furrow and preventlateral slippage ofthe wheel, the verticalv adjustment of this wheel and spindle'compensating for the difference in "1 Patented Apr. 8, 191-9. Application liledApri126, 1915. .Serial No. 23,873. i

level of this wheel and the one on theop posite side. of the machine and adapting one wheel to run in the furrow and the, other on'the land While the machine frame is supported in a substantially level position.

' A wheel of this kind, rocked back and forth to steergthe machine and having the edge of the rim adjacent to the wall of the furrow, would frequently dig into the Wall and climb out of the furrow,requiring constant attention on the part of the driver. ,to accurately steer the machine. To obviate this difficulty,

I provide a disk 19 fitting within the wheel rim and having preferably an annular flange 20 for securing the'disk to the rimand a rounded 1 obtuse angle or bend 21 formed between the vertical portion ofthe disk and the flange 20. This rounded portion projects outwardly beyond the edge of the wheel rim and bears on the wall of the furrow, the angle of the bend being such that when the wheel. isturned into the furrow wall the disk will slip thereon and keep the wheel in the bottom of the furrow, and even if the rounded portion 'ofthe disk should ride up a short; distance on the furrow wall it soon will slip back and direct the wheel again to its normal running position in the bot-v tom of the furrow. chine can be easily steered andthe guiding wheel kept in the furrow without attention.

In this way the. ma-

The angle of the bendbetween the. upright;-

andflared portion of the'diskmay, of course, be modified to suit differentconditions, but

.it.is preferably of about the angular relation'tothe wheel and furrow wall as shown in the "drawing.

In various ways the details of construeti'on maybe modified and still be within the -scope ofmy invention.

I claim, as my. nvention ,2

. "1. A traction machine having forward carrying and guidingwheels, one'of them mounted to run'in the furrow and a disk mounted insaid furrow. guiding wheel and having a rounded portion to fit into the angle formed by the bottom'ofthe furrow and theside wall and bear 011 the furrow 2. A traction machine having forward carrying and guiding wheels, means for ad justing one of them to run in the furrow,

- a disk mountedin the rim of said wheel and l aving a flange fitting within said rini,

-said disk projecting inwardly beyond the Copies of this patent may be, obtained for inner edge of the wheel rim in a plane at right angles substantially to the tread of said wheel and having a rounded face at its junction with said flange to ride on the wall of the furrow, for the purpose specified.

3. A traction machine having a forward guiding wheel mounted to run in the furrow and means mounted on the wheel and encircled by the rim thereof and projeefing outside said rim and having a rounded annular corner for bearing on the vertical wall of the furrow, for the purpose specified. In witness whereof I hzwe hereunto set my hand this 23d day of April, 1915.

HARRY W. ADAMS.

five cents each, by addressing the Commissioner of Patents, Washington, I). 0. 

